Spinning, doubling, and twisting machinery



Juiy 16, 1935. s. 2. DE FERRANTI fi fi SPINNING, DOUBLING AND TWISTING MACHINERY Original Filed Feb. 8, 1934 3 Sheets-Sheet 2 y 1935. s. 2. DE FERRANTI 2,008,064

SPINNING, DOUBLING AND TWISTING MACHINERY Original Filed Feb. 8, 1954 3 Sheets-Sheet 5 a. F. 2 C79 w m w Patented Jul i6, i935 bourne, England, New York, N. Y.

SPINNING, DOUBLING, AND TWISTING MACHINERY Sebastian Ziani dc Ferranti, deceased, late of Hollinwood, Englanthby Gertrudeltuth Ziani de Ferranti, exeoutrix, Upper Basildon, Pangassignor to Ferranti Inc.,

Original application February'S, 1934, SerialNo. 710,366. Divided and this application'December 31, 1934, Serial No. February 13, 1933 760,001. In Great Britain 7 Claims; 01. 11s s1 .5 and twisting machinery. especially to machines of the high speed flyer type. Investigation of a comparatively large number of spindles of this type showed that much had still to be done to ensure the desired success both from the aspect of speeds and also from that of product, and especially from the'aspect of obtaining the de sired product at the desired speed.

Many Letters Patent were subsequently obtained by the late Dr. S. Z. de Ferranti dealing with improvements made from time to time, and the object of the present invention is to provide still further improvements.

The-late Dr.yFerranti found that with the.

above object is view, the flyer should be balanced to a very high degree of accuracyfand special attention should be paid to spindle and flyer bearing constructions. The present application deals with improvements in such bearing structures and has for an object theprovision of a device which is relatively cheap, simple in construction and capable of sustaining successfully speeds of rotation higher than those usually as sociated with such rotating machines.

A further'object consists in providing improvements in the form, construction and arrangement of the several parts whereby the above and other objects may be effectively attained.

The invention is directed mainly to a construction of bearing. in which an intermediate resiliently mounted tube carries the bearing surfaces from the rotary parts which are mounted thereon.

Other features of the invention will bemade clear in the accompanying description.

An embodiment of this invention by way of example is represented in the accompanying drawings, in which: t

Figure 1 is a diagrammatic elevation of a spinning machine to which the present invention is applicable.

Figure 2 is a part. sectional elevation of the spinning mechanism of Figure 1.

Figure ,3 is a vertical section through the axis of a flyer bearing and driving mechanism with the flyer itself shown in position but not in section.

Figure 4' is .a mounting for the flyer bearing.

' Figure5 is a plan view of Figure 4'.

Figure 6 is an underside plan View of Figure 4. Figure '7 is a sectional elevation of a flyer.

.an outer cage 2 and an inner tube 3.

.side elevation of the resilient Figure 8 is a section through the axis of the spindle and its associated mechanism with a bobbin tube shown in chain dotted lines.

Figure 9 is a detail of the top of the spindle running tube shown partly in section.

Figure 10 is a plan view of Figure 9.

Figure 11 is a detail View of the top of spindle bearing tube unit in section showing the valve seat for the running tube top bearing.

Figure 12 is a plan of the part shown in Fig ure 11. r g

Figure 13 is a detail view' of the anti-vibration device for the top of the spindlecarbon bearing tube.

Figure 14 is a plan of the part shown'in Figure-13. it

Figure 15 is a detail view of a damping device for the centre of the spindle carbon bearing tube.

Figure 16 is a developed View of the casing of the damping device shown in Figure 15.

Figure 17 is a detail of the anti-vibration device for the bottom of the spindle carbon bearing tube. I V

' Figure 18 is a plan of the part shown in Fig ure 1'7.

Figure 19 is an elevation in part section of th bottom of the spindle running tube.

Referring to Figures 1 and 4'; the'bearings for the flyer l consist of aform of resilient or springsupported bearing comprising two parts; namely, The flyer I is air-borne along the axis of the inner tube 3 and within it, and this inner tube is spring-sup ported inside the cage 2. The inner tube consists of an electrodeposited .copper shroud containing two carbon bearing surfaces 5 and 6. Near the top of this tube air from any convenient source enters the inlet 1 which communicates with a channel formed'by two drillings 8 and 9 at right angles, for. leading air to a space la beneath an air thrust'washer It for keeping the rotating flyer assembly I from contact with the top of the flyer bearing tube 3 against the action of gravity. The bearing surfaces 5 and 6 within the tube are short in length and widely separated. The bearings are of moderate area, but need not be self-aligningybeing divided they can distort through a comparatively great angle without upsetting con ditions for the high speeds which come into question, especially where large bearing areas are to be avoided. The'outer cage 2 in which theflyer bearing tub 3, that is the inner tube, is 'suspended',*consists of longitudinal strips of steel H with circumferential rings 12 welded to the strips.

The fiyer bearing tube 3 is held by two corrugated rings l3 and M in which it is a push fit with some means of preventing it' rotating.

These corrugated rings 1 3 and M are separated by spring assemblies, l5 and i6 respectively, one at each end of the cage 2, each assembly consisting f of three helical springs marked I! and three marked IS, the mid points of the springs being the fiyer bearing tube 3.

Figure 8 consists of three parts or components,

namely an outer running tube 2? for carrying the bobbin 28, and having a brake drum 29 at the base; an intermediate bearing tube 3%), stationary but free to vibrate, having the same degrees of freedom as the running tube 21, except that of rotation about its axis, and having bearingsurfaces 25 and 26 on which the running tube 22' rotates. The bearings 25 and 26 for the outer running tube of the spindle assembly made of carbon or the like are used to prevent seizing and may be in two axially separate parts as shown in Figure 8 or may be a single long bearing.

The bearing tube 30 is also provided with a thrust device, described below, forming a thrust, or carrying bearing for the running tube at the top. This intermediate tube 30 is spring-supported on a fixed inner dead spindle 3!, which incidentally is also provided with a braking assembly and a spring clamping device as described below.

I Theouter running tube 2! is formed of electrodeposited copper, a brass braking drum 29 being secured to the base. The top of the tube 21 is closed by a cap 32 carrying a small valve spindle 33, the bottom'part of which enters a valve seating in the top of the intermediate tube.

The valve'consists of a steel pin, the lower part of which is of greater diameter than the remainder. 1 V The intermediate tube is formed of electrodeposited copper, and carries the bearing surfaces of carbon for the outer tube.

The intermediate tube 30 is closed at the top by a grooved graphite plug 34, held in place by a steel ring 35. It is bored centrally with a small hole 36 forming the seating for the valve pin 33 atthe top of the outer running tub'e. Th'e'function of this valve is to enable air to pass by lifting the outer running tubeto a certain extent, this lifting acting to cut off'the air supply except for the leakage of air permitted by a small hole ,3? in the outer running tube near the top. The

lower face ofthe graphite plug 34 is formed with a hemispherical seating 38 to take a brass swivelling air connecting piece 39, mounted in the top of the inner spindle 3|.

I The inner spindle 3| consists of a steel tube closed at the base by a plug 411 externally threaded at 4! for mounting the tube in the rail 42. A1- ternatively, the spindle may be turned from the solid and internally drilled.

At the top of thespindle aresilient cage 43 for supporting the intermediate tube is mounted. The resilient cage consists of a lower brass ring 44 fixed to the spindle and an upper ring 45 with a substantial clearance about the spindle, the two ringsbeing joined by a series of helical springs 46. Within the tube, in the vicinity of this cage,

there is provided a brass tubular connecting piece 39 with spherical ends, one bearing in the spindle and the other bearing the intermediate tube. Air passes through this connecting piece from the inside of the spindle to the inside of the intermediate tube. The dead spindle also carries a spring rodfriction damper 41 for connecting with approximately the mid-point of the intermediate tube. The position, however, does not appear to be material.

'This damping device, see Figures 15 and 16, consists of an outer cage 48 comprising top and bottom washers t9 and 50 respectively, having a substantial clearance with respect to the spindle 3|, and loosely carrying a spring circlip or incomplete ring 5!. Two further brass washers 52 and 53 are associated with the spindle; one. 52, is located roughly in position between two shoulders 55 formed on the spindle by a split collar 58, a fibre or other damping washer 54 resting between the brass washer and the lower shoulder on the spindle. Thetop brass washer 53 of this part is also loose on the spindle, but has very little clearance. This point of clearance also applies to the bottom brass washer 52.

Between these two washers a light helical spring 56 is disposed. The clearances of these washers are less than the clearances of thewashers of the outer assembly.

Between the two top brass washers 49 and 52 a resilient washer 51 is provided. The resilient washers54 and 51 act as friction washers, and are provided for that purpose.

The assembly apparently acts to prevent excessive amplitude of vibration which mightbe caused by'out-of-balance due to differences in winding of the cotton on the bobbin resulting from, for example, periodical uneven drag.

.Having now described the invention what is claimed as new and desired to secure by Letters Patent is:

can

1. A bearing structure for the rotating parts bearing surface on said intermediate member coacting with the bearing surface on said rotat ing member. 7

2. A hearing structure as claimed in claim 1 wherein said intermediate member is furnished with three bearing surfaces namely two longitudinally spaced circumferential bearing surfaces and a transverse end bearing surface on the top of the intermediate member and the rotating member has corresponding coacting bearing surfaces; 7

3. A bearing structure. for high rotational speeds comprising a fixed innerdead spindle provided with a resilient device and a damping device, an intermediate tube coaxial with said dead I spindle and resiliently supported thereon by said resilient devices, a circumferential bearing surface near each end and a longitudinally bored plug having a lateral bearing surface at the upper end of said intermediate tube, an outer running tube also coaxial withsaid dead spindle, and bearing surfaces on the inner side of said running tube coacting with each of the said bearing surfaces on the intermediate tube. a

4. A bearing structure as claimed in claim 3 including means for lubricating the bearing surfaces by air, said means comprising a longitudinal duct extending through the upper end of the dead spindle and a longitudinally bored member connecting the upper end of the longitudinal duct in the dead spindle with the lower end of the bore in the plug at the upper end of the intermediate tube.

5. A bearing structure as claimed in claim 3 including means for lubricating the bearing surfaces by air, said means comprising a longitudinal duct extending through the upper end of the dead spindle, a longitudinally bored member connecting the upper end of the longitudinal duct in the dead spindle with the lower end of the bore in the plug at the upper end of the intermediate tube, and a valve comprising a cylindrical closing member depending from the top bearing surface of the outer running tube coacting with a valve seat in and concentric with the bore in said plug.

6. A bearing structure as claimed in claim 3 including means for lubricating the bearing surfaces by air, said means comprising a longitudinal duct extending through the upper end of the dead spindle, a longitudinally bored member connecting the upper end of the longitudinal duct in the dead spindle with the lower end of the bore in the plug at the upper end of the intermediate tube, and a valve comprising a cylindrical closing member depending from the top bearing surface of the outer running tube coacting with a valve seat in and concentric with the bore in said plug, the said resilient supporting device being in two parts located respectively near the ends of the dead spindle and the said damping device being located at an intermediate position on the dead spindle.

'7. A bearing structure as claimed in claim 3 including means forlubricating the bearing surfaces by air, said means comprising a longitudinal duct extending through the upper end of the dead spindle, a longitudinally bored member connecting the upper end of the longitudinal duct in the dead spindle with the lower end of the bore in the plug at the upper end of the intermediate tube, and a valve comprising a cylindrical closing member depending from the top bearing surface of the outer running tube coacting with a valve seat in and concentric with the bore in said plug, the said resilient supporting device being in two parts located respectively near the ends of the dead spindle and the said damping device being located at an intermediate position on the dead spindle, each of the said two parts of the resilient supporting device comprising two rings spaced apart by a plurality of helical springs.

GERTRUDE RUTH ZIANI DE FERRANTI, Emecutrz'x of the Estate 0 Sebastian Ziani de Ferranti, Deceased. 

